1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 360 Liquid-Tight Flexible Metal ConduitUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FU
2、RTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Liquid-Tight Flexible Metal Conduit, UL 360 Seventh Edition, Dated January 17, 2013 Summary of Topics: The following revisions to the Standard for Liquid-Tight Flexible Metal Conduit, UL 360, are being published
3、: 1. Replacement of references to ASTM Oil No. 2 with IRM 902 oil 2. Correction to typo in Xenon-arc conditioning clause 21.3.3 Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. Changes in requirements are marked wi
4、th a vertical line in the margin and are followed by an effective date note indicating the date of publication or the date on which the changed requirement becomes effective. The revised requirements are substantially in accordance with Proposal(s) on this subject dated October 24, 2014. All rights
5、reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this Standard as is without warranty of any kind, either expressed
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7、f the use of or the inability to use this Standard, even if UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electro
8、nic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard
9、 on the purchasers computer system. The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, gures, and/or other elements of the Standard having future effective dates as indicated in the note following the affected item. The prior text for requirements tha
10、t have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. JANUARY 8, 2015 UL 360 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 8, 2015 UL 360
11、tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 17, 2013 (Title Page Reprinted: January 8, 2015) 1 UL 360 Standard for Liquid-Tight Flexible Metal Conduit Prior to the seventh edition, this standard was entitl
12、ed the Standard for Liquid-Tight Flexible Steel Conduit, UL 360. First Edition April, 1976 Second Edition August, 1980 Third Edition August, 1986 Fourth Edition August, 1996 Fifth Edition June, 2003 Sixth Edition February, 2009 Seventh Edition January 17, 2013 This ANSI/UL Standard for Safety consis
13、ts of the Seventh Edition including revisions through January 8, 2015. The most recent designation of ANSI/UL 360 as an American National Standard (ANSI) occurred on January 8, 2015. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date inform
14、ation. The Department of Defense (DoD) has adopted UL 360 on January 20, 1984. The publication of revised pages or a new edition of this Standard will not invalidate the DoD adoption. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should
15、 be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and
16、rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2015 UNDERWRITERS LABORATORIES INC. ANSI/UL 360-2015UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 14, 2014 LIQUID-TIGHT FLEXIBLE METAL CO
17、NDUIT - UL 360 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .4 2 General 5 2.1 Components .5 2.2 Units of measurement .5 2.3 Undated references .5 CONSTRUCTION 3 General 5 4 Thermoplasti
18、c Jacket 6 5 Conduit Diameters 7 6 Corrosion Protection .7 7 Strip Material .7 PERFORMANCE 8 Resistance Test 8 9 Fault-Current Test .8 10 Impact Test .9 11 Tension Test .10 12 Crushing Test 12 13 Pipe Stiffness for Conduit Intended for Direct-Burial .13 14 Flexibility Test 13 15 Zinc-Coating Test .1
19、4 16 Vertical Flame Test .16 17 Physical Properties of Thermoplastic Jacket .20 17.1 General .20 17.2 Apparatus for making physical tests 20 17.3 Preparation of specimens for physical tests 22 17.4 Elongation and tensile strength 23 18 Deformation Test .25 19 Mechanical Water Absorption Test 25 20 M
20、oisture Penetration Test 27 21 Sunlight-Resistance Test 28 21.1 General .28 21.2 Carbon-arc conditioning .28 21.3 Xenon-arc conditioning 29 21.4 Tensile strength and elongation 30 22 Test for Secureness of Fittings .30 23 Test for Durability of Ink Printing 30 MARKINGS 24 Details .32 AUGUST 14, 2014
21、 LIQUID-TIGHT FLEXIBLE METAL CONDUIT - UL 360 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover the 3/8 (12), 1/2 (16), 3/4 (21), 1 (27), 1-1/4 (35), 1-1/2 (41), 2 (53), 2-1/2 (63), 3 (78), 31
22、/2 (91), and 4 (103) trade sizes (metric designators) of liquid-tight exible steel, aluminum, brass, bronze, copper, and stainless steel conduit. The conduit covered is intended for installation in accordance with the National Electrical Code (NFPA 70) as raceway for wires and cables. 1.1 revised Ma
23、y 3, 2013 1.2 This conduit is for applications in which exibility of the conduit is necessary during installation, operation, or maintenance and the contained conductors need protection from vapors, liquids or solids. 1.3 This conduit is circular in cross section, having an outer liquid-tight, nonme
24、tallic, sunlight-resistant jacket over an inner exible metal core, and is for use in wet, dry, or oily locations in which the conduit is exposed but is not subject to physical damage. Conduit that is not marked with a temperature designation or is marked 60 C is for use at temperatures not in excess
25、 of 60C (140F). Conduit that is for use in dry or oily locations at a temperature higher than 60C (140F) is marked _C dry, 60 C wet, 70 C oil res or _C dry, 60 C wet, 70 C oil resistant with 80 C or 105 C inserted as the dry-locations temperature. 1.4 Conduit that is marked 80 C dry, 60 C wet, 60 C
26、oil res or 80 C dry, 60 C wet, 60 C oil resistant is for use at 80C (176F) and lower temperatures in air, and 60 C (140F) and lower temperatures where exposed to water, oil or coolants that is, to cutting oils and the like in machine-tool and other industrial applications. 1.5 Conduit marked in acco
27、rdance with 24.4(g) is limited to use in oil free environments. 1.6 Fittings for conduit are covered in the Standard for Conduit, Tubing, and Cable Fittings, UL 514B. 1.7 These requirements do not cover liquid-tight exible nonmetallic conduit. Flexible nonmetallic conduit is covered in the Standard
28、for Liquid-Tight Flexible Nonmetallic Conduit, UL 1660, and the ttings for this conduit are covered in the Standard for Conduit, Tubing, and Cable Fittings, UL 514B. 1.8 These requirements do not cover exible metallic tubing. 1.9 These requirements do not cover electrical nonmetallic tubing (ENT). M
29、AY 3, 2013 LIQUID-TIGHT FLEXIBLE METAL CONDUIT - UL 360 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2 General 2.1 Components 2.1.1 Except as indicated in 2.1.2, a component of a product covered by this standard shall comply with the req
30、uirements for that component. 2.1.2 A component is not required to comply with a specic requirement that: a) Involves a feature or characteristic not required in the application of the component in the product covered by this standard, or b) Is superseded by a requirement in this standard. 2.1.3 A c
31、omponent shall be used in accordance with its rating established for the intended conditions of use. 2.1.4 Specic components are incomplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperat
32、ures not exceeding specied limits, and shall be used only under those specic conditions. 2.2 Units of measurement 2.2.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 2.3 Undated references 2.3.1 Any undated reference to a cod
33、e or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. CONSTRUCTION 3 General 3.1 Liquid-tight exible metal conduit shall be fabricated from metal that will provide the mechanical and electrical properties to com
34、ply with the performance requirements of this standard. 3.2 Steel conduit in trade sizes 3/8 1-1/4 (12 35) shall be provided with a bonding strip wound enclosed by the conduit convolutions throughout the entire length of the conduit. Conduit made from aluminum, brass, bronze, copper, and stainless s
35、teel in these trade sizes shall be tested according to the Resistance Test, Section 8 and the Fault Current Test, Section 9 to determine the need for a bonding strip. The material and dimensions of the bonding strip shall result in the nished conduit having the resistance values shown in Table 8.1 b
36、efore high-current testing and shall not adversely affect the exibility and minimum bending radii of the nished conduit. JANUARY 17, 2013 LIQUID-TIGHT FLEXIBLE METAL CONDUIT - UL 360 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.3 A met
37、allic braiding material with a minimum wire diameter (O.D.) of 0.005 inches (0.13 mm) may be optionally provided between the metal conduit and the outer jacket. When the conduit core material is aluminum, the metallic braiding material, if present, shall be aluminum or tinned metal. 4 Thermoplastic
38、Jacket 4 revised August 14, 2014 4.1 The thickness of the nished jacket shall not be less than indicated in Table 4.1 when determined as described in 4.2. 4.2 The minimum average thickness of the jacket is to be determined by measuring a specimen of the jacket removed from the nished conduit and buf
39、fed to remove any ridges or other irregularities on the inside surface of the jacket. The specimen is to be selected to include the thinnest portion of the jacket as determined visually. Measurements are to be made with a dead-weight dial micrometer having a presser foot 0.250 0.010 inch (6.4 0.2 mm
40、) in diameter and exerting a total of 3.0 0.1 ozf (0.84 0 . 0 2No r8 5 3 gf) on the specimen the load being applied by means of a weight. Five readings are to be taken at different points on the specimen and the average taken as the minimum acceptable average thickness, or by means of an optical dev
41、ice accurate to at least 0.001 inch (0.01 mm). Table 4.1 Jacket thickness Trade size of conduit (Metric designator) Minimum average thickness of jacket, inch (mm) 3/8 (12) 0.030 0.76 1/2 (16) 0.030 0.76 3/4 (21) 0.035 0.89 1 (27) 0.035 0.89 1-1/4 (35) 0.035 0.89 1-1/2 (41) 0.040 1.02 2 (53) 0.040 1.
42、02 2-1/2 (63) 0.050 1.27 3 (78) 0.050 1.27 3-1/2 (91) 0.060 1.52 4 (103) 0.060 1.52 4.3 Liquid-tight Flexible Metallic Conduit sampling for testing of thermoplastic jacket materials shall be in accordance with Table 4.2. 4.3 added August 14, 2014 AUGUST 14, 2014 LIQUID-TIGHT FLEXIBLE METAL CONDUIT -
43、 UL 360 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Table 4.2 Sample requirements for testing of thermoplastic jacket Table 4.2 added August 14, 2014 Sample requirements for alternate jacket with no changes to inner metal core Sample re
44、quirements for color, using jacket material in accordance with this standard with no changes to the inner metal core Test Cl. Qty Trade size a Length Color Qty Trade size a Length Color Detailed examination 4 N/A N/A Fault current 8 3 each 3/8 or 1/2 6 ft. (1.83 m) N/A 3 each 3/4 or 1 or 1-1/4 6 ft.
45、 Flexibility 13 2 each 3/8 or 1/2 and largest up to 2 6 ft. N/A Vertical ame 15 2 Each 3/8 or 1/2 and largest up to 2 18 in. (457 mm) L&D b 2 Each 3/8 or 1/2 and largest up to 2 18 in. L & D b or individual colors Physical properties of thermoplastic jacket 16 3 Largest up to 2 20 in. (508 mm) N/A 1
46、 4 in. (101.6 mm) Mechanical water absorption 18 3 Largest up to 2 4 in. N/A Sunlight resistance 20 6 Largest up to 2 3 ft. (0.9 m) L & D b 6 Largest up to 2 3 ft. L & D b or individual colors Test for Durability of ink printing 22 24 3/8 or 1/2 6 in. (152.4 mm) N/A a See Table 4.1 for corresponding
47、 metric designators b L & D: Lightest and darkest color AUGUST 14, 2014 LIQUID-TIGHT FLEXIBLE METAL CONDUIT - UL 360 6AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 14, 2014 LIQUID-TIGHT FLEXIBLE METAL CONDUIT - UL 360 6B No Text on
48、 This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 5 Conduit Diameters 5.1 Finished metal conduit shall not be larger or smaller in internal and external diameter than indicated in Table 5.1 when determined as described in 5.2. 5.2 Co
49、mpliance of all trade sizes of conduit with the minimum and maximum internal diameters in Table 5.1 is to be determined by means of a vernier caliper accurate to at least 0.001 inch (0.01 mm). Table 5.1 Internal and external diameters Trade size of conduit (Metric desig.) Internal diameter External diameter, over jacket Minimum, Maximum, a Minimum, Maximum, a inches (mm) inches (mm) inches (mm) inches (mm) 3/8 (12) 0.484 12.29 0.504 12.80 0.690 17.5 0.
